80766578351212 has 12 divisors (see below), whose sum is σ = 152213936123536. Its totient is φ = 37276882315920.

The previous prime is 80766578351119. The next prime is 80766578351213. The reversal of 80766578351212 is 21215387566708.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80766578351213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776601714864 + ... + 776601714967.

Almost surely, 2^{80766578351212} is an apocalyptic number.

It is an amenable number.

80766578351212 is a deficient number, since it is larger than the sum of its proper divisors (71447357772324).

80766578351212 is a wasteful number, since it uses less digits than its factorization.

80766578351212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553203429848 (or 1553203429846 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 80766578351212 in words is "eighty trillion, seven hundred sixty-six billion, five hundred seventy-eight million, three hundred fifty-one thousand, two hundred twelve".